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高中英语定语从句详解
Ⅰ概念：1定语从句：在主从复合句中用作定语的从句叫定语从句。定语从句一般紧接在先行词a
tecede
t后面。2先行词：被定语从句修饰的成份。先行词可以为一个词，短语，或整个主句。3引导定语从句的词叫关系词，分为关系代词和关系副词。关系词的作用：1引导定语从句，连接主句和从句，相当于一个连词；2必在从句中作某个句子成份（可以做主语，宾语，表语，定语，状语）常用的关系代词that、which、who、whom、as在从句中作主语，宾语，whose定语常用的关系副词（在从句中只作状语）whe
、why、whereThestude
twhoa
sweredthequestio
wasJoh
Ik
owthereaso
whyhewassoa
gryTheboywhomyouaretalki
gtoismybrotherIdlikearoomwhosewi
dowlooksoutoverthesea定语从句三步：第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语或状语）；第三选择合适的关系词。
Ⅱ几个关系代词的基本用法：●that可指人或物；在定语从句中作主语，宾语，表语。指人时，相当于who或whom；指物时，相当于which一般不用于非限制性定语从句不可置于介词后作宾语如：1Doyouk
owthege
tlema
thatwhospokejust
ow2Youca
takea
ythi
gthatyoulike3Whatisthequestio
thatwhichtheyaretalki
gabout4Hereisthema
whowhomthatyouwa
ttosee5Shes
olo
gerthegirlthatsheusedtobebefore
●which指物；在定语从句中作主语，宾语，表语，定语。如：1Thebookwhichthatwaso
thedeskwasboughtbymyfather2ThebookwhichthatIboughtyesterdayisveryi
teresti
g3Thefactoryi
whichhisfatherworksisfarfromhere
●whowhomwhosewho主格在从句中作主语，在口语或非正式用法中作宾语只可指人whom宾格，在从句中作宾语只可指人whose属格，在从句中作定语，可指人也可指物。1Ilikethestude
tswhothatworkhard2Allwhoheardthestorywereamazed代词如hetheya
ythoseallo
e等后多用who3Hesama
fromwhomweshouldlear
Hesama
whomwhothatweshouldlear
from4Achildwhosepare
tsaredeadiscalleda
orpha
5Idlikearoomwhosewi
dowfacessouthIdlikearoomofwhichthewi
dowfacessouth
Idlikearoomthewi
dowofwhichfacessouth
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关系代词作介词宾语：（介词whomwhich）关系代词在定语从句中用作介词宾语时介词可放于从句之首也可放于从句之末但以放于句首较为正式（介词前置，必须注意不影响动词词组的含义。）1ThisisthebookforwhichyouaskedThisisthebookthatwhichyouaskedfor2Doyouk
owthr